World Cleanup Day
On 8 December 2023, the United Nations General Assembly, in its seventy-eighth session, unanimously adopted resolution 78/122 “World Cleanup Day”, which proclaims 20 September as World Cleanup Day.
The resolution invites all Member States, organizations of the United Nations system, other international and regional organizations, and other relevant stakeholders – including civil society, the private sector and academia – to observe…
Smart City Expo Miami
Among its most visible contributions is the internationally recognized Smart City Expo Miami, a flagship event that convenes global leaders, policymakers, business executives, and civic innovators each year. The expo has evolved into the leading platform for smart city dialogue and collaboration in the United States, connecting South Florida's unique local energy with global intelligence and insight.
By promoting cutting-edge ideas in…
World Habitat Day
World Habitat Day is marked on the first Monday of October each year and is recognized by the United Nations to reflect on the state of towns and cities, and on the basic right of all to adequate shelter. The day is also intended to remind the world that everyone has the power and the responsibility to shape the future of towns and cities.
World Architecture Day
Created by the UIA in 1985, World Architecture Day is celebrated annually on the first Monday of October coinciding with the UN-Habitat Global Observance of the World Habitat Day.
International Day for Disaster Risk Reduction
The International Day for Disaster Risk Reduction was started in 1989, after a call by the United Nations General Assembly for a day to promote a global culture of risk-awareness and disaster reduction. Held every 13 October, the day celebrates how people and communities around the world are reducing their exposure to disasters and raising awareness about the importance of reining in the risks that they face.
UN Biodiversity Conference (CBD COP 17)
The 17th meeting of the Conference of the Parties (COP) to the Convention on Biological Diversity (CBD) will convene in October 2026.
World Cities Day
World Cities Day brings Urban October to an end on 31 October each year and was first celebrated in 2014. As with World Habitat Day, a global observance is held in a different city each year and the day focuses on a specific theme.
United Nations Water Conference
Achieving Sustainable Development Goal (SDG) 6 on Clean Water and Sanitation is an essential end in itself and is also critical to progress on the 2030 Agenda as a whole. As we enter the final 5 years of the 2030 Agenda and its SDGs, the world must surge investment, innovation, political will and a spirit of solidarity into SDG 6.
The 2026 United Nations Water Conference, co-hosted by the United Arab Emirates and Senegal, and convened…
International Day of Persons with Disabilities
International Day of Persons with Disabilities (IDPD) is a UN day that is celebrated every year on 3 December. The day is about promoting the rights and well-being of persons with disabilities at every level of society and development, and to raise awareness of the situation of persons with disabilities in all aspects of political, social, economic, and cultural life.
International Migrants Day
International Migrants Day gives us a special opportunity to shine a spotlight on the invaluable contributions of millions of migrants around the world. It's also a day for us to highlight the increasingly complex environment in which migration occurs. Conflicts, climate-related disasters and economic pressures continue to drive millions of people from their homes in search of safety or simply opportunity.
World Wetlands Day
On 30 August 2021, the UN General Assembly proclaimed 2 February as World Wetlands Day to raise awareness of the urgency of reversing the accelerating loss of wetlands and to promote their conservation and restoration.
The day marks the date of the adoption of the "Convention on Wetlands of International Importance" held in 1971 in the Iranian city of Ramsar on the shores of the Caspian Sea.
ECOSOC Partnership Forum
The 2026 Partnership Forum of the Economic and Social Council (ECOSOC) will take place on 27 January 2026 at the UN Headquarters in New York under the theme “Transformative, equitable, innovative and coordinated actions for the 2030 Agenda and its SDGs for a sustainable future for all”.
In the context of the global SDG 11 review at the High-Level Political Forum 2026, UN-Habitat, together with its partners, is organizing two events at…
International Day of Clean Energy
The International Day of Clean Energy on 26 January was declared by the General Assembly (resolution A/77/327) as a call to raise awareness and mobilize action for a just and inclusive transition to clean energy for the benefit of people and the planet.
World Economic Forum Annual Meeting
The World Economic Forum (WEF) Annual Meeting 2026 will consider key global and regional challenges, including stimulating growth to improve living standards, responding to geopolitical shocks, and stewarding a just, inclusive energy transition.
51st Ordinary Session of the PRC
The 51st Ordinary Session of the Permanent Representatives’ Committee (PRC) of the African Union (AU) took place in Addis Ababa, Ethiopia, from January 12 to January 30, 2026.
International Migrants Day
International Migrants Day is celebrated annually on 18 December to shine a spotlight on the contributions of migrants around the world and to highlight the increasingly complex environment in which migration occurs.
UN Environment Assembly (UNEA-7)
The seventh meeting of the UN Environment Assembly (UNEA-7) will take place from 8-12 December 2025 at the UN Environment Programme (UNEP) Headquarters in Nairobi, Kenya. The meeting’s theme is theme, ‘Advancing Sustainable Solutions for a Resilient Planet’.
World AIDS Day
On 1 December WHO joins partners and communities to commemorate World AIDS Day 2025, under the theme "Overcoming disruption, transforming the AIDS response", calling for sustained political leadership, international cooperation, and human-rights-centred approaches to end AIDS by 2030.
World Sustainable Transport Day
World Sustainable Transport Day is celebrated annually on 26 November. The UN General Assembly (UNGA) declared the Day in recognition of the important role of safe, affordable, accessible, and sustainable transport systems for all in supporting sustainable economic growth, improving the social welfare of people, and enhancing international cooperation and trade among countries.
World Toilet Day
World Toilet Day is celebrated annually on 19 November to inspire action to tackle the global sanitation crisis and help achieve SDG 6, which promises sanitation for all by 2030. To meet the SDG sanitation target, the world needs to work on average, five times faster.
UN Climate Change Conference (UNFCCC COP 30)
The 2025 UN Climate Change Conference (UNFCCC COP 30) will convene in November 2025 in Belém, Brazil.
World Tsunami Awareness Day
In December 2015, the UN General Assembly designated 5 November as World Tsunami Awareness Day.
In 2021, World Tsunami Awareness Day will promote target (f) of the "Sendai Seven Campaign" which aims to “Substantially enhance international cooperation to developing countries through adequate and sustainable support to complement their national actions for implementation of the present Framework by 2030.”
Second World Summit for Social Development
The World Social Summit 2025, officially titled the Second World Summit for Social Development (WSSD2), is a significant global event aimed at fostering inclusive social development and addressing key challenges to achieve well-being for all. It serves as a platform for governments, civil society organizations, private sector actors, and other stakeholders to collaborate on creating policies and strategies that promote…
World Cities Day
World Cities Day brings Urban October to an end on 31 October each year and was first celebrated in 2014. As with World Habitat Day, a global observance is held in a different city each year and the day focuses on a specific theme.
6th Global WOPs Congress
The Global Water Operators’ Partnerships (WOPs) Congress is organized by UN-Habitat through the Global Water Operators’ Partnerships Alliance (GWOPA).
The Congress is the foremost gathering within the UN system for water and sanitation operators. It brings together operators, local and national governments, development partners, and stakeholders to exchange knowledge, inspire action, mobilise support for WOPs, and strengthen capacities…